Seeing the tires on the downside I thought maybe it was blowouts but I think they just scraped against the trailer as it went over. All the drive tires look brand new.
When you're going around corners remember your physics.
I remember the truck driver at a previous place I worked at told me this happened to him once because the people that loaded his trailer didn't strap anything down so when he went onto an off ramp everything shifted and tipped him over